Okay they arent bad but you can get them for cheaper.
Here in australia its AUD$2.50 for a mcflurry. What i do is i ask for a mcflurry cup (make up some excuse or just demand one), buy two soft serve cones (40c each), and choose your topping whether it be oreo or whatever (30c per flavour here) and just ask for a spoon, dump the cones and flavour in and mix it all together. This wont save you that much money but its good if u dont have the extra dollar to buy a real one.
